Light enhanced and heat dissipating bulb

ABSTRACT

A bulb comprises a seat; a plurality of metal heat sink each having two fixing surfaces, one fixing surface being fixed with an light emitting chip; and one end of each metal heat sink being placed into an insulated frame and then being fixed to a supporting surface of a heat conductive base; the metal heat sinks having an effect of absorbing heat energy and then transferring heat to the seat so as to dissipate heat; the metal heat sinks being integrally formed with the bulb base and then being combined to the seat; the heat conductive base having an inclined surface which is advantageous to reflect light from a light emitting diode so as to increase the illumination of the light emitting chip; and a metal adhesive layer being assembled to the supporting surface of the heat conductive base and the fixing surfaces of the metal heat sinks.

FIELD OF THE INVENTION

The present invention relates to bulbs, and particularly to a lightenhanced and heat dissipating bulb, wherein a plurality of metal heatsinks are installed with respective chips and are accumulated on asupporting surface of a single heat conductive base so that the light isconcentrated into one beam. Only one bulb can achieve a desiredillumination so that material is saved.

BACKGROUND OF THE INVENTION

Referring to FIG. 1, a perspective view of a prior art bulb 1 isillustrated. The prior art bulb is formed by a seat 11, a bulb base 12,a light emitting diode 14, and a lampshade 13. The seat 11 is installedwith a circuit board therein. When the circuit board is conducive, heatwill generate so as to have a high temperature. However high temperaturewill induce errors in operation. The bulb base 12 is a sealing body. Abackside of the bulb base has a via hole 15. The via hole 15 is used fordissipating heat. In the prior art, the size of the via hole 15 is verysmall. Furthermore, in the prior art, bulb is made of plastics which isnot a preferred heat dissipation object so that heat in the bulb can notbe dissipated fully. Thereby there are too many light emitting diodes 14are installed so that generated heat can not be completely dissipated.As a result, heat will affect the light emission so that theillumination is low.

Thus, in the prior art light emitting diode has a small volume, shortlight time and low power so that it is used as indicators, or displays,or auxiliary brake lights or traffic signals or traffic lights. Ingeneral, the prior art LEDs are bad in heat dissipation so that only asmall power is generated. If it is desired to enlarge the size of theLEDs, the cost will increase. Moreover, LED lights use metal as supportand for dissipating heat, but it is not sufficient. As a result, heataccumulated will burn the chips of the bulb and package of the bulb soas to reduce the illumination of the bulb to reduce the lifetime of thebulb.

SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to provide alight enhanced and heat dissipating bulb, wherein a plurality of metalheat sinks are installed with respective chips and are accumulated on asupporting surface of a single heat conductive base so that the light isconcentrated into one beam. Only one bulb can achieve a desiredillumination so that material is saved.

Moreover, the heat energy is dissipated out through the metal heatsinks, the heat conductive base, bulb base or heat dissipater so as todissipate heat from the light emitting chip rapidly so that the volumeof the bulb is small, and heat can be dissipated rapidly and thelifetime of is long.

Furthermore, the heat from the chip can be dissipated rapidly so thatthe chip can suffer from a larger electric power.

To achieve above object, the present invention provide a light enhancedand heat dissipating bulb which comprises a seat; a plurality of metalheat sink each having two fixing surfaces, one fixing surface beingfixed with an light emitting chip; and one end of each metal heat sinkbeing placed into an insulated frame and then being fixed to asupporting surface of a heat conductive base; the metal heat sinkshaving an effect of absorbing heat energy and then transferring heat tothe seat so as to dissipate heat; the metal heat sinks being integrallyformed with the bulb base and then being combined to the seat; the heatconductive base having an inclined surface which is advantageous toreflect light from a light emitting diode so as to increase theillumination of the light emitting chip; and a metal adhesive layerbeing assembled to the supporting surface of the heat conductive baseand the fixing surfaces of the metal heat sinks.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of the prior art bulb.

FIG. 2 is an assembled perspective view of the bulb of the presentinvention.

FIG. 3 is a schematic cross view of the bulb of the present invention.

FIG. 4 is a schematic cross view about the bulb of the presentinvention.

FIG. 5 is a schematic view about the bulb of the present invention.

FIG. 6 is a second schematic view about the bulb of the presentinvention.

FIG. 7 is a third schematic view of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

In order that those skilled in the art can further understand thepresent invention, a description will be described in the following indetails. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims.

A bulb comprises a seat; a plurality of metal heat sink 26 each havingtwo fixing surfaces, one fixing surface being fixed with an infraredchip; and one end of each metal heat sink 26 being placed into aninsulated frame 25 and then being fixed to a supporting surface 241 of aheat conductive base 24; the metal heat sinks 26 having an effect ofabsorbing heat energy and then transferring heat to the seat so as todissipate heat ;a heat conductive base 24 having the supporting surface241 for fixing the metal heat sinks 26; the metal heat sinks 26 beingintegrally formed with the bulb base 22 and then being combined to theseat; the heat conductive base 24 is a tin surface and having aninclined surface which is advantageous to reflect light from a lightemitting diode so as to increase the illumination of the infrared chip;the heat conductive base 24 being capable of absorbing heat energy fromthe metal heat sinks 26; and a metal adhesive layer being assembled tothe supporting surface 241 of the heat conductive base 24 and the fixingsurfaces of the metal heat sinks 26.

The bulb has a power source of light emitting diodes (such as aninfrared light emitting diodes). Each fixing surface is a lightdispersing plane or a light focus concave surface which is suitable as asearchlight or an infrared light source.

In the present invention, the metal heat sink 26 may be a copper post,or the material of the metal heat sink 26 is selected from one of gold,silver, copper, and aluminum of high heat conductivity. In the presentinvention, the shape of each metal heat sink 26 is selected from one ofround shapes, rectangular shapes, and irregular shapes.

Moreover, the heat conductive base 24 may have, for example, atrapezoidal structure made of aluminum. A smooth inclined plane isformed at a periphery of the heat conductive base 24. The inclined planehas the effect of the refraction of light emitting diode so as toincrease the illumination of the bulb.

Furthermore, in the present invention, each metal heat sink 26 is placedin a frame 25 and then is fixed to the supporting surface 241 of theheat conductive base 24 so as to match the requirement of differentpower. Or the material of the heat conductive base 24 is selected fromgold, silver, copper and aluminum of high heat conductivity.

Furthermore, the heat conductive base 24 is an independent body as amechanical connection and then the heat conductive base 24 is combinedwith a heat dissipating device. The heat conductive base 24 is astructure as an outlook of the bulb. An interior of the heat conductivebase 24 has a recess for receiving power wires of the bulb.

With reference to FIGS. 2, 3 and 4, the exploded perspective view,assembled perspective view and schematic cross view of the presentinvention are illustrated.

The bulb 2 of the present invention includes a seat 21, a bulb base 22,a heat conductive base 24, a supporting surface 241, a plurality ofmetal heat sinks 26, a frame 25 and a lampshade 23. A periphery of theseat 21 is installed with a screw thread 211. Many kinds of screwsmatching the requirement of the seat 21 are suitable as the thread 211.A front end of the seat 21 is installed with a bulb base 22. An upperside of the bulb base 22 is installed with a heat conductive base 24. Afront end of the heat conductive base 24 has a smaller plane as asupporting surface 241. An upper side of the supporting surface 241 isinstalled with a plurality of metal heat sinks 26. Each metal heat sink26 contains a chip 261. An insulating frame 25 serves to space the metalheat sinks 26 for positioning the clamping tightly the frame 25. Avolume of the heat conductive base 24 is larger than that the metal heatsink 26. The heat conductive base 24 is a preferred heat conductor and apreferred heat dissipating device. When the light emitting chip 261emits heat, the heat conductive bases 24 will absorb the heat rapidly.Then the heat is transferred to the heat conductive base 24 and the heatdissipater 27 for reducing heat energy of the metal heat sinks 26 sothat the heat conductive base 24 and the metal heat sinks 26 can becooled. Thereby the heat energy of the chip can be diffused to the aireffectively and rapidly. When it is desired to have higher illumination,the number of the metal heat sinks 26 must be increased and the area ofthe supporting surface 241 is expanded. At this state, the heat from thelight emitting chip 261 is very high, the heat conductive base 24 cannot dissipate heat energy. Thereby the bulb base 22 can be replaced by aheat dissipater 27 according to the light power. A periphery of the heatdissipater 27 is formed with a via hole 271 so as to dissipate heat ofthe chip 261 effectively and rapidly.

Advantages of the present invention will be described herein. In thepresent invention, a plurality of metal heat sinks are installed withrespective chips and are accumulated on a supporting surface 241 of asingle heat conductive base 24 so that the light is concentrated intoone beam. Only one bulb 2 can achieve a desired illumination so thatmaterial is saved.

Moreover, the heat energy is dissipated out through the metal heat sinks26, the heat conductive base 24, bulb base 22 or heat dissipater 27 soas to dissipate heat from the light emitting chip rapidly so that thevolume of the bulb 2 is small, and heat can be dissipated rapidly andthe lifetime of is long.

Furthermore, the heat from the chip can be dissipated rapidly so thatthe chip can suffer from a larger electric power.

Although the present invention has been described with reference to thepreferred embodiments, it will be understood that the invention is notlimited to the details described thereof. Various substitutions andmodifications have been suggested in the foregoing description, andothers will occur to those of ordinary skill in the art. Therefore, allsuch substitutions and modifications are intended to be embraced withinthe scope of the invention as defined in the appended claims.

1. A bulb comprising: a seat; a plurality of metal heat sinks eachhaving two fixing surfaces, one fixing surface being fixed with a lightemitting chip; and one end of each metal heat sink being placed into aninsulated frame and then being fixed to a supporting surface of a heatconductive base; the metal heat sinks having an effect of absorbing heatenergy and then transferring heat to the seat so as to dissipate heat; aheat conductive base having the supporting surface for fixing the metalheat sinks; the metal heat sinks being integrally formed with the bulbbase and then being combined to the seat; the heat conductive base is atin surface and having an inclined surface for reflecting light from thelight emitting chip so as to increase the illumination of the lightemitting chip; the heat conductive base being capable of absorbing heatenergy from the metal heat sinks; and a metal adhesive layer beingassembled to the supporting surface of the heat conductive base and thefixing surfaces of the metal heat sinks.
 2. The bulb as claimed in claim1, wherein each fixing surface is one of a light dispersing plane and alight focus concave surface.
 3. The bulb as claimed in claim 1, whereina material of the metal heat sink is selected from one of gold, silver,copper, aluminum of high heat conductivity.
 4. The bulb as claimed inclaim 1, wherein the shape of each metal heat sink is selected from oneof round shapes, rectangular shapes, and irregular shapes.
 5. The bulbas claimed in claim 1, wherein each metal heat sink is placed in a frameand then is fixed to the supporting surface of the heat conductive baseso as to match the requirement of different power.
 6. The bulb asclaimed in claim 2, wherein the material of the heat conductive base isselected from gold, silver, copper and aluminum of high heatconductivity.
 7. The bulb as claimed in claim 1, wherein the heatconductive base is an independent body as a mechanical connection andthen the heat conductive base is combined with a heat dissipatingdevice.
 8. The bulb as claimed in claim 1, wherein the heat conductivebase is a structure as an outlook of the bulb.
 9. The bulb as claimed inclaim 1, wherein a heat dissipater is placed between the heat conductivebase and the bulb base for dissipating heat from the heat conductivebase.
 10. The bulb as claimed in claim 9, wherein the heat dissipater ismade of metal and has a via hole at a periphery thereof.
 11. The bulb asclaimed in claim 1, wherein an interior of the heat conductive base hasa recess for receiving power wires of the bulb.
 12. The bulb as claimedin claim 1, wherein a periphery of the bulb base is installed with alampshade.
 13. The bulb as claimed in claim 2, wherein an outer side ofthe seat has screw threads and a specification of the bulb matches tointernational standards of bulbs.
 14. The bulb as claimed in claim 1,wherein the light emitting chip is light emitting diodes.
 15. The bulbas claimed in claim 1, wherein the light emitting chip is an infraredchip.